Definition of photoinhibition in US English:

photoinhibition

noun

Physiology
  • Inhibition of a physiological process (and hence sometimes the growth of an organism) by light, especially inhibition of photosynthesis at high levels of sunlight.

Origin

1950s; earliest use found in The Botanical Gazette. From photo- + inhibition.

Pronunciation

photoinhibition

/ˌfəʊtəʊɪn(h)ɪˈbɪʃn/